The Digital Ark: Early Modern Collections of Curiosities in England and Scotland, 1580-1700
Flat Holm
River Severn (Body of Water), England
View Larger MapDescription of institution: There are argentiferous (i.e. silver-bearing) galena deposits on Flat Holm; the pits and mounds visible on the surface of the island are a result of trial borings. URL:https://en.wikipedia.org/wiki/Flat_Holm